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Finding the Fourth Proportional to 478,488.62, 660,308.22 and 260,706.36

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Solution

The fourth proportional to 478,488.62, 660,308.22 and 260,706.36 is: 359,771.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,488.62 : 660,308.22 = 260,706.36 : x
  2. Step 2: Convert to fraction form
    478,488.62/660,308.22 = 260,706.36/x
  3. Step 3: Cross multiply
    478,488.62x = 660,308.22 × 260,706.36
  4. Step 4: Simplify right side
    478,488.62x = 172,146,550,038.12
  5. Step 5: Solve for x
    x = 172,146,550,038.12/478,488.62
  6. Step 6: Final answer
    x = 359,771.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.